<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
    // const sum = (...args) => {
    //     let total = 0;
    //     args.forEach(item => total += item);
    //     return total;
    // }
    // console.log(sum(10, 20));
    // console.log(sum(10, 20, 30));


    // 剩余参数和解构配合使用
    let ary1 = ['张三', '李四', '王五'];
    let [s1, ...s2] = ary1;
    console.log(s1);
    console.log(s2);
    </script>
</body>
</html>